Lamp-burner.



' No. 809,112. PATENTED JAN. 2, 1906.

I D. JOYAL. I

LAMP BURNER.

APPLICATION FILED JUNE 28,1905.

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Jan. 2, 1906.

Application filed June 28,1905. Serial No. 267,439.

To all whmn it may concern.-

Be it known that I, DOLPHIS J OYAL, a citizen of Canada, residing atLowell, in the county of Middlesex and State of Massachusetts, haveinvented certain new and useful Improvements in Lamp-Burners, of whichthe following is a specification.

My invention relates to burners for oil or spirit lamps; and its objectsare to utilize more of the light-rays than in former constructions andalso to utilize more of the downward rays, which in most lamps are lostin the brasswork and in the oil-receptacle.

My invention is illustrated in the accompanying drawings, in which-Figure 1 is a view of an oil-lamp with the chimney in place lookingtoward the edge of the wick. Fig. 2 is a view of a lamp-burner withoutthe chimney looking at the flat side of the wick. Fig. 3 is an enlargedview of the transparent'tube of my device and its supports in partialsection. Fig. A is a top view of the perforated platform.

Similar letters and numerals designate corresponding parts in theseveral views.

A is the oil-receptacle.

B is the neck, which supports the wick and chimney.

C is the usual glass chimney of such lamps.

D is the transparent tube of my invention.

E is the wick-tube, and F is the flame.

Such lamps are usually made with a perforated platform 5, through whichthe air passes upward through the chimney to feed the flame and thenceout through the top of the chimney. My platform 5 is also perforated forthe same purpose.

For the purpose of directing the air which rises through platform 5 toand against the flame in such manner that the flame will burn morefreely and brightly I use the tube D, of glass or other transparentsubstance. This tube should be substantially cylindrical or slightlyconical, with its lower end open and its upper end of hemisphericalshape, with a dee transverse slot 6 therein. It should be higl ier thanthe hinged brass cones usually employed, as it is my purpose to utilizethe downward rays from the flame. The object of using a transparent tubeis to permit these rays to pass through and downward and also to utilizethe rays from the lower part of the flame, which are usually lost insidethe brass cone.

My trans arent tube D is made with a transverse s 0t 6, through whichpart of the air current passes and out of which the flame F comes fromthe wick. The edges of this slot are preferably somewhat rounded tobetter resist the heat of the flame. The bottom of my tube D is beaded,as shown at 7, and it is supported by the metal collar 8, the top rim ofwhich is bent over to embrace the beaded bottom 7 of the tube D.

The perforated platform 5 rises in its center into a cone 9, which isscrew-threaded to correspond with screw-threads on the bottom of collar8 and is flat and perforated on its top. To put the tube D in place, itscollar 8 is screwed on this cone 9, and it is removed by unscrewing.

The wick-tube E must be lengthened to correspond with the height of theslot 6 of tube D, and its outer surface should be plated with somebright metal which is not easily tarnished, as nickel, to form areflecting-surface for the purpose of reflecting any light rays whichstrike it either directly from the flame or from the inner surface oftube D.

The advantages of my device are that as the tube D is of such height itacts as a chimney and causes a powerful air-draft up to and about theflame, thus making it burn more brightly and steadily. As tube D andwicktube E are so much elevated with reference to platform 5, more ofthe rays of light from the flame pass downward and by the plat formthanwould be the case with a lower tube and the rays from the bottom of theflame pass through the tube D. Moreover, most of the rays which risefrom the bottom of the flame strike the concave inside surface of thetop of tube D and are reflected downward, as from a concave mirror,besides which the reflecting-surface of wick-tube E helps to throw therays of light outward; also, when the wick is turned down the smallerflame created is in full view and few of the rays are lost.

What I claim as my invention, and desire to cover by Letters Patent, is-

1. In a lamp-burner, a perforated horizontal platform, comprising acentral cone having a screw-threaded upper rim, a metal collar adaptedto screw on said cone, an extended transparent tube formed with atransverse slot at its top, and an extended wick-tube as described. 1 I

2. In a lamp-burner, a perforated horizontal platform, comprising acentral cone having a screw-threaded upper rim, a metal collar adaptedto screw on said cone, an extended transparent tube beaded at its bottomand hemispherical at its top withatransverse rim to form a gripping edgefor said collar slot with rounded edges, and an elongated andhemispherical at its top with a transverse wick tube, the outer surfaceof which is slot with rounded edges, and an elongated adapted to reflectlight, as described. I5 5 wick-tube as described; In testimony whereof Iaffix my signature 3. In a lamp-burner, a perforated horizonin presenceof two witnesses. tal platform, comprising a central cone hav- DOLPHISJOYAL. mg a screw-threaded upper rim, a metal collar adapted to screw onsaid cone, an extend- Witnesses: 10 ed transparent tube beaded at itsbottom JOHN A. GATELY,

rim to form a gripping edge for said collar EDWARD W. CLARK.

